{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9664786","patent":{"patent_number":"US-9664786","title":"Method and apparatus for distance measuring equipment (DME/normal) using alternative pulse shapes","assignee":null,"inventors":[],"filing_date":"2014-07-21T00:00:00.000Z","publication_date":"2017-05-30T00:00:00.000Z","cpc_codes":["G01S"],"num_claims":18,"abstract":"A method for measuring distance includes transmitting a first pair of RF pulses from an airborne interrogator, where the first pair of RF pulses are temporally separated from each other by a first time interval and each of the RF pulses in the first pair of RF pulses has a first pulse waveform. The method also includes receiving a second pair of RF pulses transmitted by a ground transponder. The RF pulses in the second pair of RF pulses have a second pulse waveform characterized by a filtered asymmetric Gaussian function or a smoothed trapezoidal function. The method further includes determining an elapsed time between transmitting the first pair of RF pulses and receiving the second pair of RF pulses and determining a distance between the airborne interrogator and the ground transponder based on at least the elapsed time."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for distance measuring equipment (DME/normal) using alternative pulse shapes","description":"A method for measuring distance includes transmitting a first pair of RF pulses from an airborne interrogator, where the first pair of RF pulses are temporally separated from each other by a first tim","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9664786","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9664786","citation_suggestion":"Patentable. \"Method and apparatus for distance measuring equipment (DME/normal) using alternative pulse shapes\" (US-9664786). https://patentable.app/patents/US-9664786","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9664786","json":"https://patentable.app/api/llm-context/US-9664786","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:03:37.891Z"}